<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>.active{
        border: 2px solid green ;
        border-radius: 5px;}
        </style>
</head>
<body>
    <script src="vue.js"></script>
    <div id="app">
        <div>
            <h3 v-bind:title="title">切换图片边框</h3>
            <img v-bind:src="img" width="100" height="100" v-bind:class="{active:isActive}">
        </div>
        <p v-bind:style="{color:textColor,fontSize:fontSize+'px'}">This is a paragraph.</p>
        <button @click="toggleActive">切换</button>
    </div>
    <script>
        constcomApp=Vue.createApp({
            data(){
                return{
                    title:"切换图片边框",
                    img:"./assets/logo.svg",
                    textColor:"red",
                    fontSize:16,
                    isActive:false,
                }
            },
            methods:{
                toggleActive(){
                    this.isActive=!this.isActive;
                }
            }
        }).mount("#app");
    </script>
</body>
</html>